Get ‘charged Up’ For Your Installations

15 Questions

Settings
Please wait...
Electronic Quizzes & Trivia

SDM Magazine 5-Minute Tech Quiz, October 2013


Questions and Answers
  • 1. 
    Typical burglar alarm systems can usually be powered by any of the following types of power supplies except
    • A. 

      24VAC

    • B. 

      12VDC

    • C. 

      6VDC

    • D. 

      24VDC

  • 2. 
    A 7aH battery is designed to deliver
    • A. 

      1 amp of power for 7 hours.

    • B. 

      7 amps of power for 1 hour.

    • C. 

      1.75 amps of power for 4 hours.

    • D. 

      All of the above

    • E. 

      None of the above

  • 3. 
    Battery calculations should always allow for a little extra power in calculating loads.  That extra power is usually
    • A. 

      5 percent

    • B. 

      10 percent

    • C. 

      15 percent

    • D. 

      20 percent

    • E. 

      What are you talking about? You size batteries based on load!

  • 4. 
    A diode is used to
    • A. 

      Add resistance to a circuit for supervision.

    • B. 

      Limit current flow to one direction.

    • C. 

      Retain power storage for later use.

    • D. 

      All of the above

    • E. 

      None of the above

  • 5. 
    The color code on a 42K Ohm resistor would be
    • A. 

      Red, red, black

    • B. 

      Red, yellow, black

    • C. 

      Yellow, red, orange

    • D. 

      Orange, orange, black

  • 6. 
    Which of the following would not be considered an over-current protection device?
    • A. 

      Resistor

    • B. 

      Fuse

    • C. 

      Circuit Breaker

    • D. 

      PTC

  • 7. 
    LEDs are
    • A. 

      Liquid Energy Diverters

    • B. 

      Lighting Electrical Devices

    • C. 

      Light Emitting Diodes

    • D. 

      Light Energy Directors

  • 8. 
    Exceeding the manufacturer’s listed draw on aux power by less than 10 percent is acceptable because they underrate the power supply for that purpose.
    • A. 

      True

    • B. 

      False

  • 9. 
    Which of the following statements is true?
    • A. 

      Using an underrated transformer with larger wire is acceptable.

    • B. 

      Using an overrated transformer with smaller wire is acceptable.

    • C. 

      A properly sized transformer with a 24/4 wire doubled up is acceptable.

    • D. 

      Transformers should be matched to the panel power supply specified by the manufacturer.

  • 10. 
    Current flows with the least amount of resistance through which wire?
    • A. 

      22AWG

    • B. 

      24AWG

    • C. 

      18/2AWG

    • D. 

      6AWG

  • 11. 
    Which of the following is a resettable device?
    • A. 

      LED

    • B. 

      Fuse

    • C. 

      Circuit Breaker

    • D. 

      Fixed temperature fire alarm thermostat

  • 12. 
    Amperage and voltage are the same.
    • A. 

      True

    • B. 

      False

  • 13. 
    Which of the following is correct?
    • A. 

      420mA+1A+0.6A=2.02A

    • B. 

      5A+600mA+1.2A=12.2A

    • C. 

      0.300A-1.2A+3200mA=4.7A

    • D. 

      (3x1.2A)-400mA=4A

  • 14. 
    Which of the following will provide power for the greatest amount of time?
    • A. 

      2 8 volt, 12 Amp batteries wired in series

    • B. 

      2 12 volt, 8 Amp batteries wired in parallel

    • C. 

      4 24 volt, 4 Amp batteries wired in parallel

    • D. 

      4 4 volt, 24 Amp batteries wired in parallel

  • 15. 
    A  UPS
    • A. 

      Is a delivery service used for packages.

    • B. 

      Is backup battery power supply that engages during a light and power source outage and has a limited amount of current it can deliver.

    • C. 

      Is a power supply that is used to provide regular, steady and unlimited power.

    • D. 

      Require any batteries and runs completely off utility power.